Comptech, also known as Comptech Racing, is a company that designs and builds racing car engines. It was originally started in Sunnyvale, California, in the late 1970s by Doug Petersen and Don Erb. The company moved to a new location in Rancho Cordova, California, in the mid 1980s, then to El Dorado Hills, California. The original Comptech closed its doors in February 2007. The race engine shop was purchased by a previously existing circle track racing supply company, Penney Racing. Comptech's Chief Executive Officer is Frederick W. Penney. The wildly successful aftermarket parts side is still in operation today under the name 'CT Engineering' run out of Rancho Cordova, California.